Question 10 The t-distribution is (____1____), while the z-distribution is (__2__ _). (a) 1. a population distribution; 2. a sampling distribution b) 1. the single standard normal distribution; 2. a family of distributions (c 1. a family of distributions; 2. the single standard normal distribution ()d) 1. a fixed width and height; 2. variable in width and height depending on degrees of freedom D View Feedback